Improvement in rag-washing machines for paper-making



v P. A. OLOUDMAN. Rag-Washing Machine for Paper Making.

No.197,764. M Patented Dec. 4,1877.

WITNESSES: r I VENTOR:

ATTORNEYS.

N. PETERS. EHOTO-UTHDGRAPHER, WASHINGTON. 0 C.

UNITED STATES PATENT OFFICE. I

FRANK A. CLOTTDMAN, OF CUMBERLAND MILLS, MAINE, ASSIGNOR .TO S. D.WARREN & CO., OF BOSTON, MASSACHUSETTS.

IMPROVEMfNT IN RAG-WASHING MACHINES FOR PAPER- MAKING.

Specification forming part of Letters Patent No. 197,764, dated December4, 1877; application filed November 3, 1877.

To all whom it may concern:

Be it known that I, FRANK A. OLOUDMAN, of Cumberland Mills, in thecounty of Cumberland and State of Maine, have invented a new andImproved RagWashing Machine, of which the following is a specification:

In the accompanying drawing, Figures 1 and 2 are vertical transversesections of a cylinder washer for rag-washing machines, on lines as wand y 3 Fig. 3, respectively; and Fig. 3 is a vertical longitudinalsection of the same on line 2 2, Fig. 1.

Similar letters of reference indicate corresponding parts.

This invention relates to improvements in the interior construction ofcylinders of ragwashing engines used in paper-manufacturing; and itconsists of a number of spiral buckets that extend from thecircumference toward and slightly past the central outlet, terminatingat their inner edges in angular flanges. The buckets are also inclinedtoward the longitudinal axis, from the rear toward the front, and madeof a continuous piece of wood, which is preferable to metallic buckets.

Referring to the drawing, A represents a cylinder washer as used in themanufacture of paper in rag-washing engines. The periphery of thecylinder is covered with wirecloth, in the usual manner, to admit thewater but exclude the rags. i

The cylinder A is arranged at the inside with a number of curvedbuckets, B, that extend in a spiral from the circumference toward andslightly past the central outlet.

The cylinder is revolved by a central shaft, G, secured to the rear endor head of the cylinder, and, by radial arms, to a cylindrical lia singaround the central outlet of the front ead.

The inner edges of the buckets terminate in flanges a, placed atrightangles thereto, so that the water cannot flow from one bucket into theone next following until the latter has left the water-line of the tub,or, in other words, has ceased to dip water for that revolution of thecylinder. .The buckets are also secured to the cylinder at an angle ofinclination to the longitudinal axis of the cylinder from the rear headtoward the outlet, as clearly shown. in Fig. 3. This inclination of thebuckets allows the water to pass off freely as soon as it has reachedthe level of the bottom of the outlet, and allowing none to be liftedhigher than the center.

In the elevation of each bucketful of water to the outlet a portion ofitflows past the center of the shaft and counterbalances a portion ofthe weight due to that on the'outside.

The volume of water is not only lifted to a lesser height, by reason ofthe peculiar form of the buckets and their inclination toward theoutlet, but it is also lifted more directly, or by a shorter line, thanby any other washing device now in use, so as to require, consequently,less power.

The spiral buckets are preferably made of one continuous piece of wood,which is sawed in the same manner as the wood for carriage and sleighbodies, from the periphery of the Such Wooden buckets are superior tometallic buckets, as the action of chemicals thereon is not injurious tothe bucket and to the pulp. The use of such single-piece wooden bucketsadds greatly to the value of the cylinder for rag-washing engines, andforms an essential feature of my improvement in cylinder washers.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A cylinder washer for rag-washing engines, havingspiral interior buckets extending from the circumference to the centraloutlet, substantially as set forth.

2. A cylinder washer for rag-washing engines, having spiral interiorbuckets extending from the circumference toward and slightly past thecentral outlet, the inner edges of said buckets being flanged,substantially as and for the purpose described.

3. A cylinder washer for rag-washing engines, having spiral interiorbuckets extendtinuous single piece of wood, substantially as and for thepurpose described.

FRANK A. CLOUDMAN.

Witnesses:

WM. L. LoNGLEY, ALBERT A. OoRDWELL.

